Wi-Fi and internet, diagnosed

Ground Truth finds out why your Wi-Fi or internet feels slow, room by room and over days, before you buy a new router you may not need. When the problem is your provider, it helps you prove it.

iPhone
iPad
Mac

Free fixes first
Hardware only when it helps
No account, stays on your devices
Status in words, not just color

What it does

Room by room Wi-Fi map

See where your Wi-Fi is great, poor or dead, drawn on your own floor plan and stopped at the walls.

Live connection grades

Wi-Fi to the router, the internet, DNS and web pages, each graded on its own so you see which part is slow.

Features

Find the real cause before you buy hardware

63 things Ground Truth does, grouped by what you're trying to do.

Map your home

17 features

Latency and stability layers
Switch the map to delay or steadiness to find the rooms where calls stutter even when the signal looks fine.
Pro
Scan your floor plan
Walk each room holding your iPhone or iPad. The LiDAR scanner draws the floor plan while Ground Truth measures your Wi-Fi.
Survey without LiDAR
No LiDAR, or measuring a yard or garage? Walk and measure anyway, then place it on a plan.
Use your own floor plan
Ready for calls, games and 4K
More with Pro
Plain-language findings
Every floor and every home
More with Pro

Before and afterPro
Grades on your floor in ARPro
Signal strength from your MacPro
Indoor cellular mapPro
Access points and photo notes
Speed tests as you walk
Notices when you change floors
3D model of your homePro
Edit the plan
Outages stay off the map

What these do

Use your own floor plan: Bring in a PDF or photo of your plan, set its scale, and tap where you measured.
Ready for calls, games and 4K: Each room is checked for video calls, gaming, 4K streaming and browsing, with a summary like "Calls work in 8 of 10 rooms".
Plain-language findings: Dead spots, weak rooms and what to do about them, including where a mesh node would actually help.
Every floor and every home: Keep separate maps for each floor and each place you look after.
Before and after: Put two surveys side by side to see whether a change actually helped.
Grades on your floor in AR: Walk back through the house and see each spot's grade on the real floor.
Signal strength from your Mac: Carry a Mac through the house to add signal, noise and link rate readings to the map.
Indoor cellular map: See where your phone signal holds up inside, and where Wi-Fi Calling would help.
Access points and photo notes: Mark where your router and access points are, and pin photos and notes to a spot.
Speed tests as you walk: Stand still for a moment and a quick speed test is recorded at that spot.
Notices when you change floors: Going up the stairs mid-walk? Ground Truth notices and asks which floor you're on.
3D model of your home: Open the scanned rooms as a 3D model.
Edit the plan: Fix a wall the scan got wrong, or remove one.
Outages stay off the map: A provider outage or a network switch during a walk shows on the timeline instead of painting a room as bad.

Find the real cause

10 features

Finds the real cause
Your Wi-Fi, router, modem, provider and DNS are tested on their own, so the problem gets the right name and a confidence level.
Free fixes first
Before anything costs money: moving the router, changing a channel or DNS, a cable, a setting. Check them off as you go.
Hardware only when it helps
Did it work?
Network checks
Lag under load

What you might be thinking
What's been ruled out
Responsiveness score
NAT and gaming check

What these do

Hardware only when it helps: A new router, modem or mesh is only suggested when a measurement shows it would help, with a rough price and no brands.
Did it work?: Mark a fix done and Ground Truth measures again, then shows before and after.
Network checks: Double NAT, broken IPv6, a slow router DNS, DNS hijacking, blocked HTTP/3 and packet-size problems, checked in one go.
Lag under load: Measures how much delay grows when someone streams or downloads, in each direction, graded A+ to F.
What you might be thinking: Common guesses, like needing mesh or a new router, set against what the measurements actually say.
What's been ruled out: See which parts of your connection were checked and found fine, and why.
Responsiveness score: How responsive your connection stays when it's busy, in round trips per minute.
NAT and gaming check: Shows whether your connection is Open, Moderate or Strict for games and calls, and spots carrier-grade and double NAT.

Measure your connection

9 features

Internet speed test
Download and upload speed with no extra hardware, with a note that it includes your provider's line.
Wi-Fi-only speed test
Pair a Mac on your network to measure your Wi-Fi alone, separate from your internet plan.
Pro

Video call checkPro
Knows when you switch networks
Calm, readable numbers
Small-packet capacityPro
Drops and IP changes logged
Signal, noise and channel on Mac
Nearby networks

What these do

Video call check: Simulates a video call through your Mac and scores how it would sound, idle and with the line busy.
Knows when you switch networks: Changing networks, joining cellular or turning on a VPN is noted, never reported as a problem.
Calm, readable numbers: Readings settle over half a minute and round sensibly, so grades don't flicker on every ping.
Small-packet capacity: Tests how many small packets your Wi-Fi handles, the kind games and calls send.
Drops and IP changes logged: Wi-Fi drops, address changes, lost internet and sign-in pages are noted with the time.
Signal, noise and channel on Mac: Your Mac shows live signal strength, noise, channel and link rate.
Nearby networks: See the networks around you and how crowded each channel is.

Cellular on your iPhone

3 features

Test cellular too
Your iPhone runs the same checks over cellular while staying on Wi-Fi, so you can compare them. Off until you turn it on.
Is it your provider?
When the home internet is down but cellular works, Ground Truth says so plainly.

Capped cellular speed tests

What these do

Capped cellular speed tests: Optional speed tests over cellular, with a monthly data limit you set.

Watch it over time on your Mac

10 features

Watches your connection for days
Leave Ground Truth running on a Mac and it records every dropout and slowdown, even with the window closed.
Outage log
Each outage with its start, end and which part of the path failed first.

Spots router restarts
Evening slowdown charts
Reads your cable modem
Wired or Wi-Fi, and link speed
Respects your data cap
Menu bar status
Your Mac as a test partner
Your plan and label speeds

What these do

Spots router restarts: Restarts are logged as outages and marked as likely restarts, with a note when the timing suggests an automatic update.
Evening slowdown charts: See when your connection struggles by hour and day of the week.
Reads your cable modem: Signal levels, errors and restarts from common cable modems and gateways, compared with the normal ranges.
Wired or Wi-Fi, and link speed: Knows how the Mac is connected and flags an Ethernet link slower than your plan.
Respects your data cap: Scheduled tests stay within a share of your monthly allowance that you set.
Menu bar status: A glance at your connection from the menu bar.
Your Mac as a test partner: Your Mac pairs with your iPhone by a 6-digit code to run Wi-Fi-only speed and call tests.
Your plan and label speeds: Enter your plan and its broadband label to see how often you get less than promised.

Get your provider to fix it

7 features

Make your case to your provider
Gathers the evidence, writes the message and tracks every contact until the problem is fixed.
Messages written for you
A chat opener, a full email and a phone script, filled in from your measurements. Copy or share in one tap.

Know the next step
Evidence pack
Follow-up reminders
Outage credit estimate
Did the visit fix it?

What these do

Know the next step: When to follow up, when to escalate in writing, and how to reach the FCC, CCTS or the UK ombudsman.
Evidence pack: A PDF of outages and modem readings, plus a spreadsheet of outages, ready to attach.
Follow-up reminders: A reminder when it's time to chase your provider again.
Outage credit estimate: Adds up outage hours so you can ask for a credit.
Did the visit fix it?: Record what the technician did and compare the evidence before and after.

Comfort and privacy

4 features

Status in words, not just color
Every grade carries a word and a symbol, decorative art is hidden from VoiceOver, and motion respects Reduce Motion.
No account, stays on your devices
No sign-in. Surveys and provider cases stay on your devices; location is removed from shared surveys and account numbers never leave the device.

Night red
Made for iPad and Mac

What these do

Night red: A dim all-red look for dark rooms.
Made for iPad and Mac: Side-by-side layouts on larger screens.

Everywhere you are

One app, on every screen you use

What each device adds.

iPhone

iOS 26.1
- Test cellular too
- Is it your provider?
- Indoor cellular map
- Capped cellular speed tests
iPad

iPadOS 26.1
- Scan your floor plan
- Survey without LiDAR
- Grades on your floor in AR
- Wi-Fi-only speed test
Mac

macOS 26
- Watches your connection for days
- Outage log
- Spots router restarts
- Evening slowdown charts

No account, stays on your devices

No sign-in. Surveys and provider cases stay on your devices; location is removed from shared surveys and account numbers never leave the device.

Pricing

Diagnosis is free

Free: one home and floor, the survey walk and Wi-Fi map, the diagnosis, network checks, the Mac monitor and the provider case. Ground Truth Pro adds more homes and floors, every map layer, Wi-Fi-only tests with your Mac, PDF and CSV reports, before and after, 3D and AR: $2.99 a month, $19.99 a year with a 7-day free trial, or $49.99 once. Family Sharing included.

Free

Map one home, find the cause, watch it from your Mac.

Room by room Wi-Fi map
Finds the real cause
Live connection grades
Watches your connection for days
Make your case to your provider

Ground Truth Pro

Every layer, every floor, Wi-Fi-only tests and reports.

$2.99 a month
$19.99 a year · 7-day free trial
$49.99 once

Everything in Free, plus:

Latency and stability layers
Ready for calls, games and 4K: Adds the Ready map layer
Every floor and every home: Every home and every floor
Before and after
Grades on your floor in AR

Family Sharing included.

What each plan includes
Feature	Free	Pro
Ready for calls, games and 4K	Per-room summary and the check at each spot	Adds the Ready map layer
Every floor and every home	One home and one floor	Every home and every floor
Latency and stability layers	Not included	Included
Before and after	Not included	Included
Grades on your floor in AR	Not included	Included
Wi-Fi-only speed test	Not included	Included
Video call check	Not included	Included
PDF survey report	Not included	Included
Signal strength from your Mac	Not included	Included
Indoor cellular map	Not included	Included
3D model of your home	Not included	Included
Small-packet capacity	Not included	Included

iPhone or iPad with iOS 26.1 or later, Mac with macOS 26 or later. Scanning a floor plan needs an iPhone or iPad with LiDAR; everything else works without it.

Questions

Before you download

How much does it cost?

Which devices does it run on?

iPhone (iOS 26.1 or later), iPad (iPadOS 26.1 or later), Mac (macOS 26 or later).

What do I need?

iPhone or iPad with iOS 26.1 or later, Mac with macOS 26 or later. Scanning a floor plan needs an iPhone or iPad with LiDAR; everything else works without it.

What happens to my data?

No sign-in. Surveys and provider cases stay on your devices; location is removed from shared surveys and account numbers never leave the device.

Something else? Ask us.

Ground Truth

Wi-Fi and internet, diagnosed

Wi-Fi and internet, diagnosed

What it does

Room by room Wi-Fi map

Live connection grades

Find the real cause before you buy hardware

Latency and stability layers

Scan your floor plan

Survey without LiDAR

Use your own floor plan

Ready for calls, games and 4K

Plain-language findings

Every floor and every home

Finds the real cause

Free fixes first

Hardware only when it helps

Did it work?

Network checks

Lag under load

Internet speed test

Wi-Fi-only speed test

Test cellular too

Is it your provider?

Watches your connection for days

Outage log

Make your case to your provider

Messages written for you

PDF survey report

Status in words, not just color

No account, stays on your devices

One app, on every screen you use

iPhone

iPad

Mac

No account, stays on your devices

Diagnosis is free

Free

Ground Truth Pro

Before you download

Ground Truth